Perhaps I'm misunderstanding, but if you're claiming you are seeing 1-2ms pings consistently over a 30 day period on a WiFi network you're either doing something wrong with your measurement or you have a very unusual network with no other devices active, no meaningful interference, and extremely high signal strength.
It's not technically impossible, but it's so unlikely as to be the sort of thing the marketers who like to use terms like "AC3200" would be embarrassed to claim.
While obviously I don't have the amount of data that you have over a long period of time, I set up smokeping on my own home file server after seeing your graph and what I have so far should emphasize the point. My worst-case 20 ping average over this time is measured in microseconds with absolutely zero loss, testing to my gateway.
every solution is about tradeoffs. Of course you will be getting 500ns pings very low sd with wired ethernet. What matters is about the application and does the solution meet the needs of the application.
What I've been trying to communicate is that with adequate attention to the wifi hardware and configuration you can achieve excellent results that are adequate for VC & gaming .
that's it. Wifi will never reach wired ethernet performance on the junk bands that it is forced to operate on.
Your chart is showing an average of 20 pings every five minutes, I'm talking about absolute results from a constant ping.
Your data also shows multiple consecutive samples where at least one of those 20 pings were entirely lost. On a wired LAN at home scale any sort of packet loss would be indicative of something being very wrong.
